Finding the Fourth Proportional to 128,277.41, 177,009.10 and 74,551.19
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Solution
The fourth proportional to 128,277.41, 177,009.10 and 74,551.19 is: 102,872.66
Step by Step Solution
- Step 1: Write the proportion equation
128,277.41 : 177,009.10 = 74,551.19 : x - Step 2: Convert to fraction form
128,277.41/177,009.10 = 74,551.19/x - Step 3: Cross multiply
128,277.41x = 177,009.10 × 74,551.19 - Step 4: Simplify right side
128,277.41x = 13,196,237,974.41 - Step 5: Solve for x
x = 13,196,237,974.41/128,277.41 - Step 6: Final answer
x = 102,872.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.